Torpedo nets may be enough to save the Oklahoma. As for the Arizona I'd say either have strong enough CAP/AAA to disrupt the bombing run on her or have someone realize the peril of being a sitting duck and flood her magazines.
The Arizona still blows up, and the Oklahoma capsizes. But yes, that's roughly the POD that I was looking for.With the better part of three years it should be easy, have a look at CalBears Pacific War Redux for clues to the potential power of the US.